| abstract |
The invention refers to a natural product consisting in an aqueus extract of brown desert truffles of the Terfezia -genus fungi, which contains proteins, aminoacids, carbohydrates, utilizable as eye drops in the treatment of ocular affections of cornea and in glaucoma, as well as to its obtaining procedure. The truffles are extracted with demineralized water, in a ratio of 2-3: 1 (w/v) at 4°C; the extract is separated through filtration on filter aid layer or centrifugation, then it is purified through ultrafiltration on membranes with cut-off limit of 10 kDa; the permeate solution obtained is concentrated under vacuum to 1/6-1/9 (v/v), then benzalkonium chloride 0.01 % (w/v) and sodium chloride 0.6% (w/v) are added, thus obtaining an eye drops solution which fills in sterile bottles of 5-10 ml. |